Features:<br> and <br> Easy to install: This replacement filter is specially designed for USB air coolers, without any special tools, it only takes about 2 minutes to complete, giving you a cool and cooler.<br> High-quality quality: No need but your air cooler does not work, you only need to replace a filter element and you can use it again, allowing you to breathe for fresh and healthy wind and protect the for health of your family.<br> Function: It can effectively block impurities, dust, etc. in the air, improve the air quality, and keep the air cooler clean.<br> Replacement frequency: It is recommended that the filter be replaced every 2-3 months to avoid excessive use of product bacteria.<br> The replacement filter is suitable for mini portable USB air purifiers, which can be absorbed quickly and effectively.<br> <br> Specifications:<br> Material: Plastic+Paper<br> Weight: 225g<br> Size: 4.72x4.72x4.53inch<br> <br> Note:<br> 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.<br> 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.<br> <br> Package includes:<br> 1x Air Cooler Filter This product is designed for comfort and performance. Ideal for everyday use, gym training, and body support.